21186555

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108649}}^1$

素因数の和:108670

約数の個数: 16

約数和(自身を含む): 36506400

約数和(自身を除く): 15319845

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 108649, 325947, 543245, 1412437, 1629735, 4237311, 7062185, 21186555]

約数ペア:

[(1, 21186555), (3, 7062185), (5, 4237311), (13, 1629735), (15, 1412437), (39, 543245), (65, 325947), (195, 108649)]